Churn-dasher.



R. C. LAMBIE,

cuumx: DASHER,

APPLICATION FILED SEPT- 5, 1917-.

.L%&,%@ Patented Jan.15,191 8 citizen of the United States, residin at nonmr U. MMBIE,

or 'ansrnv, anna s.

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trwmmbmttettwteteat Patented ran. as, rare,

application died September 5, 1917. serial at. 1%,821.

To allwhomet may concern."

Be it known that L'Ronnnr G. Lantern, a

Austin, in the county of Travis and btate of Texas, have invented a new and useful Churn-'Dasher, of which the following is a specification.

The present invention relates to dashers or agitators for churns and similar devices, and aims to provide a novel and improved construction and assemblage of the component elements of the dasher or agitator, whereby to facilitate the agitation of the material and to aerate the same.

andrm This also "the object of the invention to proylde a dasher mechanism of the nature indicated which can be inexpensively manufactured, which is simple and durable in construction, which can be readily taken apart for cleaning, and which will serve, its ofice "in a thoroughly eficient manner.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described size having secured thereto near its lower end a ring or flange 2 provided with agitat ing blades '3 radiating therefrom. 'l'he'ring- 2 and blades 3 can be stmed from sheet metal with the stock a between the blades twisted so that the blades are disposed he ic'ally to give-the material a vertical motion during the rotation of the shaft l.

Extending am'ally through the tubular shaft 1 is a shaft 5 of smaller diameter and spaced born the wall of the shaft l to prpvide a vertical air passage between said shafts, and the lower end of the shaft 5; is rounded, as at 6, to seat in a step bearing for supporting the shaft 5 for Natl 10K; Said in out the invention, there is proshaft can seat at'its lower end in a step bearng provided on the bottom of the receptacle in which the dasher works, as will be readily understood. The shaft 5 has secured thereon a sleeve or hub 7, and a ring or flange 7 is secured upon and surrounds the sleeve or hub 7 and is provided with agitating blades 8 radiating therefrom. The blades 8 and ring 7 can also be stamped from sheet metal, the same as the agitator above described, and the stock 9 between the blades and ring is twisted so that the ends and cross sections of the blades 8 are vertical, said blades. being curved to direct the material radially, while 'theblades 3 direct the material vertically, thus-'obtaining a thorough agitation of the material due to the close proximity of the two sets of blades.

A spider 10 is disposed at the lower end of the tubular shaft 1, being provided with a'-*- .central aperture 11 through which the shaft 5 extends, and the spider is seated on the upper-end of the sleeve or hub 7 of the lower agitator, and the lower end of the shaft 1 1s in turn seated on the arms of the spider, said arms being provided wlth upturned lugs 12 at their ends between whlch the lower end of the shaft 1 is held and con tered. Thus, the shaft 1 is supported by the spider which is in'turn supported by the phaft 5, and said spider also holds the two shafts centered or concentric. The recesses 13 between the arms of the spider provide openings through which air can flow from n the tubular shaft 1, thereby permitting air to pass into the agitated material between the two agitators, to thoroughly aerate the liquid or material being worked. The two shafts-are preferably rotated in opposite di-' motions, and due to the agitation and suction created, air will be drawn downwardly through the pipe 1. a

A bearing or plug 15- is secured within the upper end of the tubular shaft 1 and the shaft 5 is journaled through an aperture in said plug, to hold the upper ends of the I shafts centered. The plug-l5 has an upstanding boss 16 rotatable loosely in t a bearing 15 and ofnon-circular contpur for the engagement of means for rotating the shaft 1 in onedirection, and the upper protrading end of the shaft 5 has anon-circa means to rotate the shaft 5 in the opposite direction. The deft-l is provided near rte lhll . lar portion for the engagement of other lltl upper end with air inlet openings 14 opening through its wall for admitting air to flow downwardly within said shaft.

The shaft 1 is referably rotated in such a direction that t 1e blades 3 force the material downwardly past the end of the tubular shaft 1, thus sucking the air downwardly within'and from the lower end of the said tubular shaft, the material and air then being directed to the lower agitator,

\ which, in connection with the upper agitator, thoroughly mixes the liquid andsair.

Having thus described the invention, whatis claimed as new is 1. A dasher embodying a'tubula'r shaft, a second shaft therein, agitators carried by said shafts near theirlower ends, the tubular shaft having an air passage therein, and means supported by the second mentioned shaft and supporting thelower end of the tubular shaft for the flow of air therefrom,

agitator carried by the tubular shaft near its lower end, an agitator carried by the second mentioned shaft having a hub on said shaft, and a spider seated on said hub, the lower end of the tubular shaft seating on the arms'of said spider, and said arms of the spider having portions engaging the tubular shaft to hold it concentrlc with the I second mentioned shaft.

4. A dasher embodying a tubular shaft having anair inlet opening near its upper end, a bearing at the upper end of the tu'bular shaft, a second shaft extending through the tubular shaft and said bearing, the tubular shaft having an air passage therein,

an agitator carried by the tubular shaft the second mentioned sha t below the tubular shaft, and a spider supported the second mentioned shaft and engaging the lower end of the tubular shaft to support v and center it.

5. A dasher embodying a tubular shaft,

a second shaft extending therethrough and spaced therefrom for the flow of air through the tubular shaft, agitators carried bythe shafts near the lower ends thereof, the lower end of the tubular shaft being open between the agitators for the' flow of air therebetween, and the agitators being arranged to impel the liquid away from said open end of the tubular shaft to draw air down-' wardly therethrough.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two wltn'esses.

. ROBERT C. LAMBIE.

, Witnesses: 4

I. D. CHILDREss, P. L. WOODWARD.

near its lower end, an a 'tator carried by 

